The Model 4425 Convergence Meter is used to monitor closures in underground excavations, tunnels, etc. It is comprised of a spring tensioned transducer, turnbuckle, connecting rod (stainless steel, fiberglass or graphite), rod clamp, and a pair of stainless steel eyebolts.
|Standard Ranges¹||12.5, 25, 50, 100, 150 mm|
|Temperature Range¹||−20°C to +80°C|
|varies with application|